John Otis

Of the 177 environmental activists killed around the world last year, 60 were murdered in Colombia, says the advocacy group Global Witness. In most cases, no one is tried or convicted.

Venezuela's election board says voters on Sunday approved a referendum called for by the government to claim sovereignty over an oil- and mineral-rich piece of neighboring Guyana.

Venezuela and neighboring Guyana are at loggerheads over Venezuela staking a claim on more than half of Guyana's oil-rich territory. On Sunday, Venezuela will hold a referendum to uphold its claim.

Venezuelans attempt to tackle the massive oil slicks that are clogging up one of South America's largest bodies of inland water — by using human hair.

Venezuela's authoritarian regime has just banned the most popular opposition candidate of standing in next year's election. As recent history has shown, that might not work in their favor.

The father of Colombian soccer star Luis Díaz was freed earlier this week, after he was abducted by a guerrilla group.

In an effort to promote a free election in Venezuela, the U.S. government is offering the autocratic government of Nicolas Maduro a deal. But already it's facing challenges.

Millions of Venezuelans have left their country to escape authoritarian rule and economic collapse. We tell the story of one family headed to the U.S.

Venezuela's opposition are holding a primary to elect the candidate who will take on President Nicolas Maduro in next year's elections. The Maduro government is not making campaigning or voting easy.

Venezuelans continue to leave their homeland in record numbers. It is the largest refugee exodus ever recorded in the Western Hemisphere.

Mayor Edilberto Molina relocated to a nearby town last year after drug-trafficking guerrillas threatened to kill him. He's not the only Colombian politician forced away by threats from criminal gangs.

Reporter John Otis catches up with one Colombian mayor who faces so many threats from criminal groups — that he's been forced to govern — largely from exile.